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The motion along a curved path is termed as circular motion, like the orbital motion of planets, ice skater, blades of the fan, gears, amusement park rides, etc. The two fundamental concepts which are studied in circular motion are rotation and revolution. While rotation means the movement in circle round an axis, revolution is when an object moves in a circular path around another object or center.

Many people often misinterpret these two concepts as they think that these two are same. But this is not so, as they differ from one another in the sense that rotation does not changes the position of the object, but revolution does. So, here we've explained the difference between rotation and revolution in detail, take a read.

Content: Rotation Vs Revolution

Comparison Chart

Definition of Rotation

The term 'rotation' is defined as the movement of an object, in a circular manner, about the certain point, i.e. turn around, its own axis. There exist an imaginary line known as the rotational axis around which a three-dimensional object rotates.

In the rotation, every point makes a circle around the central point. So, there is an equal distance from the centre to any point of the shape. It is expressed in terms of degrees, wherein when the rotation is performed clockwise, the degrees is negative, while an anticlockwise rotation, will result in positive degrees.

The most popular example of rotation is the earth's rotation, which takes approximately 24 hours to complete it, causing day and night.

Definition of Revolution

The term 'revolution' is used to describe a motion, wherein an object moves in a circular direction around an object or centre, in a fixed path or orbit. It involves travelling around an axis outside the object, i.e. external axis.

The distance travelled by an object, in one revolution, around the circle, is nothing but its circumference. The time taken by an object to complete one revolution around the circle is known as the period, represented by T.

The revolution of the Earth around the Sun is in the anticlockwise manner, which takes 365 days and 6 hours to complete. It is the only reason for causing seasons to change.

Key Difference Between Rotation and Revolution

The difference between rotation and revolution can be drawn clearly on the following grounds:

1. A circular motion around an axis, located within the body of the object, is called rotation. A circular motion around an axis, located outside the object, is called a revolution.

2. Rotation is the movement of an object on its own axis. On the other hand, revolution is the complete round trip around something, i.e. another object or centre.

3. Rotation is when the object spins around an internal axis. Conversely, revolution is when the object travels around an external axis.

4. In the rotation, the object moves around its axis, without changing its position. As against this, in the revolution, the object moves along an elliptical course, with a continuous change in its position.

5. Earth's rotation is from the west towards east, which it completes in approx. 24 hours. On the contrary, the revolution of the Earth around the Sun is in a counterclockwise manner, which is completed in around, 365 days.

6. Common examples of rotation are the hand of clocks, spinning top, etc. In contrast, the common examples of revolution are rounding a curve in a car, kids merry go round, etc.

Conclusion

Therefore, with the above discussion, you might have gained ample knowledge about the two terms, and will not get confused between them in future. While rotation means spinning around its own axis, revolution means to move around another object. Taking the example of the Earth, which rotates 366 times to complete one revolution around the Sun.

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Difference Between Rotation and Revolution (with Comparison Chart) - Key Differences

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The motion along a curved path is termed as circular motion, like the orbital motion of planets, ice skater, blades of the fan, gears, amusement park rides, etc. The two fundamental concepts which are studied in circular motion are rotation and revolution.

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Difference between rotation and revolution

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Revolution is when the Earth goes around the sun once. This takes about 365 days and every 4 years 366 days. Revolution is what causes seasons, Because of the earths tilt in the axis sometimes one part of earth is closer to the sun than others and that makes summer because it makes the weather in that area warmer. Its the opposite for winter, when the earth is farther away or tilted away from the sun its colder which makes the season winter.

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Rotation is when the Earth spins one time all the way around. This takes about 24 hours. Earths rotation makes night and day. when one side of the earth is turned towards the sun, that side of earth is having its day, while the other side is having its night.